US896739A - Transmission-gearing. - Google Patents

Description

No. 896,739., PATBNTED AUG'. 25', 1908. W. G. MAYO & J. HOULEI-IAN. TRANSMISSION G-EARING.

APPLICATION FILED SEPT.5, 1907.

2 SHEETS-SHEET l.

A NUR/WNS and useful,Transmission-Gearing, of which the following 1s a speciiicatlon.

- motor traction system of whic'h' the present invention forms a part, but it is to be .undershort radius curves of city-railroads, and the suburban roads,as'well v as the long gentle ,A l change its relation tothe 'drive shaft from ments-in transmission gearing designe more carpasses around a curve, ,t, bein' under- STarns ingerir oir-rior.

- WILLIAM c. MAYQ'AND Jo'nNnoULEnAN, or EL raso, TEXAS, Assieuoasor ONE-Turanro GEORGE E. BRIGG-S, OF BABASTQW, TEXAS.'

' 'ritArisi/rrssrortenartrne.

No.s9e,739. specification er Letters ranma retreated. Aug. 25, 1908;

4 Application sied september 5, 19er. semi No. $91,525.

To all; 'whom it mayconcern:

Be it known that we,-WILLLA,M C. Maro spring connections between the truck and and JOHN HOULEHAN, citizens of the United l car body, butsincesuch compensatingmeans States, residing at El Paso, in the county of form no necessary part of the present inven- El Paso, State of Texas, have invented a new tion they will not be here considered. i i

prises essentially a drive shaft Ywlfiicli forthef This -inventionhas referenceto im rovepurposes of the present invention -may'be particularly'rfor use in connection with our 1 fixed relation to the' car body. Upon the E drive shaft theregis mounted a pinio'nfand meshingl with said pinion there is a' gear wheel of suitable size, mounted" upon and causing the rotation of a shaft which may be connected to the car axles through suitable bevel or miter gears. Since the driven shaft is not in fixed relation to the drive shaft but participates in the movement of the truck about v its verticali axis, therefore, -in order that Vthe gear wheel and the4 pinion mayl stood that `while thepresent invention is lan integral part of our system stillit may be used, either wholly or with regard to some of its essential features, in other connections.

We have devised atraction system wherein each car, whether considered se arateiy er as an element of a train, is a complete unit in itself, and, among other things, comprises a prime mover, preferably in the form of an explosive or internal combustion 'engine, from which power for driving the car is trans, mitted to the'wheels through mechanism of which the present invention constitutes a coactive part.

The cars used in our system are designed for urban, suburban and interstatetraffic, and, therefore, provision `must be made whereby "the cars may be adapted to the lat-route the other, the gear wheel ispro'fv vided with a' connection to the driven shaft, of the universal type, whereby `the driven shaft may c range i-tsangular relation-to the tion -from the gear wheel 4without undue strain to the parts or the consumption of un. necessary energy.

i structions designed to adapt thepower transmderately sharp curves found on many 'mission gear to ytine particular conditions to curves' such as are used on trunk lines. To road car or in situations similar thereto.L accommodate the cars to the curves the trucks must necessarily move about` vertical axes and because in our system the prime stood by the consideration of a-specific em# bodiment, and, therefore, we,` will describe-in" trated in the accompanying drawings Vforming part of this speciiicationjn whicli,- Figure l is a side elevatiomfwith parts in section and otherp'a'rts broken away, ofa upon the main frame of t e car, we have devlsed a means whereby motion may loe-transmitted from a 'power shaft positively to the our present invention.;v 2 isafcrossse tien, with parts ini-elevation, ofthe drive pinion and a portion ofthe power-shaft; F1g. 3

that of'parallelism to angular relations sufficient to allow the truck to pass' around any f curve'in anyroad upon which the' carinay travel.- Thisis' accomplished' without sub-,- jecting the shafts-to any's'train whatsoever because' of their changedrel tions when lthe ings used'in the structure. ,t Referring to the drawings, .there is shown stood that suitable provision 'may e made for compensating for vertical `motion oe-A l tween the drive and driven shafts dueto tne in the broader aspect, the inventioncom?"v drive shaft and at the same time receive mo The invention also comprises special con-- detail-the embodiment of the invention illus-` considered as rotating about an axishaving a A always rotate inthe-same plane one with re-r se Y which it is subjected when used l'upon a raii- Thepresent inventionwill be bestu'n'dentransmission gear between a drive and a* drivenshaft, constructed 1n accordancewith 1 i -is a cross` section through a portionetI the gear wheel' and casing tlfierefotI; and lge, fi, 5 and e are detail viewsof.a-pontioriefthe adjiusting mechanism for certain. fbali-bearv which'. are fr usto-conical. The rollers with seatsin the cups v12 and plugs 8. The hub 3,

a drive shaft 1 and a driven shaft ,2. The shaft -1 is, in our system, notvdirectly con-l nected to "the explosive engineor other prime mover but' certain. intermediate structures are em loyed for reasons which need .not be referre 'to here, but for the purposes of the present invention the shaft 1 may be and will'.

e referred to as the drive shaft. The driven 'shaft 2 might'beutilizedfor the pur ose of Acarrying thedrivewheels ofthe car, u t we prefer that this driven shaft .be connected tothe caraides throughother gearing-- -Since it is desirable in .our system that the shafts 1 and -2 lie longitudinal' lanes with ,reference to.th e car body, the slliaft 2 may be con. nectedto the-car axles by suitablebevel or miter gears.

Upon.V the 'shaft-I* 1 is keyeda hub 3 having at oneend an annular -ilange 4, 'preferably-integral with the hub 3, land at they the innerfaces. ofthe flanges, and finally.

terminatingin frusto-'conic'al extensions 9 whichfshould be turned true. Between the flanges 4 -5 are' :is-many rollers 10-as -there arematchingholes 7, and .at -each end the rollers' 'are expandedyas's'hown atl 1, and are axially recessed vto form cups-12,sthebases of their heads 11 are slightly shorter than the space-between .the .flanges 445, and the cu s 12 receive the frusto-.conical .ends` of,v t e plugs 8, while between the ends 9 of the plugs 8 andthe .bases of the cups 12 are disposed .ball-bearings 13 of sufficient number to fill up the space, as indicatedin Fig. 1, although in 2 only two such'balls are shown.

. -Although the.v `'ball--bearings 'y are made of. hardened-steel and the Walls ofthe cups 12 and also the plugs S'may be suitably hardened, there will vstillbe some wear, andfor thisreason ,r'ovisio'n' should be v made for ltaking up suc wear, at least to a certain eX-l tent. In 2 the flange or annulus 5 is shown underlaid by a .number of ring-shaped shims or laminas 14 ofsuitablematerial, one

or more of which may be removed from time to time so thatthe said flange 5- may be,

brought closerlto the flange 4 tovcompensatefor the-wear of the ballfb'earings 13 and their with its flanges 4 ---5y and rollersy 10, constitutes a gear pinion of the barrel type, but the pins areformed of anti-friction ro 1ers which offer practically negligible resistance. The pmion is made fast to the drive shaft 1 by a ey or splme 15. t v

lMeshin with the barrel pinion is a large gear Whee having its teeth 16 formed on the outer (periphery of a ring 17, which ring is expan ed laterally interior to the teeth, as shown at 18, and is .therejformed with annular taper grooves 19, one on each side, in

which grooves are seated taper rings 2Ov havingv their outer 'faces formed with-V- vshaped. grooves 2l constituting ball races. Now, the barrel pinion and the gear ring 17 are inclosed' in asuitable casing 22 formed of two cheek-platesse arated by .a peri heral flange 23.' One of t e cheek plates, which is i, designated b the numeral 24, is removable from the caslng, while the other cheek plate 1s formed integral with the flange 23.-, Th'e 'removable cheek'plate 24 is secured to the 'remainder of the casing by through bolts 2.5

extending through bosses 26 formed in one vpiece with the 'flange 23.- The casing is .shaped toy conform approximately to the sha e of the intermeshing pinion and gear,

V an said casing may be so put together that the interiorthereof is practically dust-proof. For this purpose the shaft 1 may be ,provided with dust-proofjournals in the casing and.

theshaft 2. may likewise be provided with dustroof journals, but sin'ce the shaft 2, as will hereinafter appear, has universal .movement Within a restricted fzone, the

bearings for this shaft, while madey dust 'proof in any well known manner, should like wise have a certain freedom of movement to.'

permit the shaft 2 to change its angular re# ation to the axis of the shaft 1.

nular grooves 27 located opposite the grooves 19 in the gear ring 1.7, and these grooves 27 receive tapered annular rings 28 having V-shapedgrooves 29, also constituting ballraces. Seated in the matching grooves 21 The'oasing 22 is provided with tapered anand 29 are circular series of Aballs 30 forming sidethrust bearings for the ear ring 17 and preventing any lateral play t ereof but offering n o matenal frictiona resistance to the rotation of .this ring. Since these anti-fricinterposed between it'and the corres onding end of the flange 23 a number of s 1ms orV laminas 31 which, as the ball-bearings Wear may-be removed one. or more at a time to com ensate for such Wear. These laminasshou d be very thin so that theadjustment for wear may be correspondingly delicate'.

- At diametricallylopposite points on the diallyinward toward the axis -of the ring.

'In these bosses are formed yradial taper holes 33' in each of which is seatedy a taper plug 34 .l having an expanded head 35 which 1s again -tion bearings formed by the balls 30 are liable to wear, the cheek plate 24 may'have,

vio

scenes a contracted to vtorrn a taper' ledge 36 trom Whicnitnere isan extension 37 ot the lug nahy terminating in a i'rusto-conicallend 38,

Locatedconcentric to and within the ring :1,7 is another ring 39 having formed in it two l brosses 40-4@ at diametrically Vop osite points, and othertwo bossesv4lr-4L a so at Adgiaxnetrically opposite points but on a (lianeter ninety degrees displaced with. `relation tto the air of bpsses 4G; Each bdss is prirvidewith a central radial perforation,

one.. portion 'of which is provided with screwthreads in which is seatecta nut-43 h aving "its inner .face provided with` a taper counter- 44 receiving a taper cup 45, which cup u has its open end formed into a cylindrical portion 45 tting the bore ott-he opening .'l through the boss 4601' 4l as the case may be. Y nto cach-cup 45 there extends the end- 37 of '2e one of the taper pins 34, and interposed between the taper ledge andthe taper por-V `tion 'of the cup 45, and' alsoubetween the truste-conical end 38 andl the taper portionl of said cup', are bali-bearings 47 and 48 re- 'f spective-y, the being of appropriate to iitythe'spaces intended.'- The nut 43 expanded head 49 with its periphery orrnedfinto a' series ot notches 50.. This head-49 overhangslthe corresponding face of thaliana-4!) or 41, dndbetween this head and n A theE V,is a series oi shims or laminas 51 of ,ssiitableV material, but each shim or lamina made very thin. A set-screw 52 engages one 'attire notches- 50 and passes through a perforation enters a =suitable threaded opening formed `in' the corresponding boss 4() or 4l. When it is desirable to adjust the nut 43 so as to take upwear which may occur between the balls 47 and 48 and their seats, the screw 52 is removed and one or. more of the laminse '51 are taken out, after which the nut may be screwed down into place until the screw 52 may be made to engage another notch 50, when the nut will be heid-against accidental displacement.

well as. the ta er plugs 8 and the rollers 10, Way ultimate y wear-to an extent too great 'to be any longer taken up by the removal of the laminas provided for the purpose. is also true of the rings 20 and 28. It willbe observed that these several .parts all have taperseats, sol that they may be easily loosened from their seats by a slight blow and 4may then be replaced by new parts. The taper plugs 34 entering the ball-bearing re' pmc 54 keyed tothe shaft 2. f

` .It will e observed that the taperplugs 34 entering-te hub 54 and the arts coacting Y with these taper plugs, as Wel as the bosses 41, are `made considerablyl heavier thanthe taper plugs 34 entering the bosses 32 and coacting With'the bosses 40. The parts are so rounded as shown in the. dra ingthey sired 53 inl the laminas 51 and finally The taper plugs 34 and also the cups 45, as"

Tliis 4 es in the bosses 41v nave-seats in a hub vmarie because the strain upon the taper i S4 entering the hub 54 isgreategtha the, strain upon the tape? Plug f 34am i.

#Us Si 1"'5- a be brought to 4a more or less Uniclaljsh l the teeth may `be otherwiseshaped,

Now', letI it be supposedltha-t thje shaftll: ceives rotative movement from ,any suita bleg; 80 power source, either suchf` as wehaye'falready referred to or tsonde otherspower source-tha barrel pinion carried by said, shaft- ,Will fp'a'r f ticipate in such Inovernentik The lgearlringgi 1-7 will also be rotated because of its engage-'s 85V;

nient with the-barrel pinion,andthe ring 319 and hub 54, together with the shaft 2, participate in this rotativernovernentn Let@` it be supposed that the shaft-siland 2 are in"l exact parallelism. Powerwillf'bey'transago f mitted troni the shaft to-the shaft '2 through the gearing described .without "others'trainlff than that incident to thetransrnission ofthe* power. Let it now besupposed thatthef shaft 2 is connectedv up tolacar axle and'fthfat' 95 A the car truck enterssu'po'n iacuirvej *Under these conditions the car truckfwill swing about the vertical axis and tthe shaft Q ,"bein'g' connected to the car aXle; will, jcours'e,`fbe'f" A swung about a vertical aiiisicutting'nthe hubY 150 54, thus'putting theshaft Zot of parallelism with the shaft l; Taking thefposition of the arts shown in"Fig.".1",1"'the ring 3Q willl also be swung upon the samel verticaljaxis fasj the hubv54, moving aboutthe plugsl enter- 10gAv `ing the bosses 40. HowevenQasjthe'gear v wheelvis` rotated the boszses40.` more outlet"` this ertical-, plane toward. fthfe plane, while the bosses-41 areI riefln'intom" such verticalplane. When the` fbtlssesf4`l 1110 have reached such verticalfplane the has returned into the plan-e ofthe gear wher/321,11; while the taper plugs34 'enteringfthefballlf; seats-in the bosses 41 'have turned sutiicifently and because of the universality' of; the sup'- ports thering 39 inovesaboutlv the: iplugsen-zl y, f

By virtue ofthe universalrnoiintinglof k;

shaft 2 in the gear 'wheel-,lZthelatterInayfbe-f125 kept strictly in the pla-ne of'rota'tionof the barrel pinion, while the angular displaceinentfu' of the shaft 2 without appreciable increase ffi strain hpon .the parts maybe; quiterna'rked. .Thus, under the conditions of traffic, Aa car 13o to com ensate for the returnfof -thering ,.39 to, i:- ;coinci ence withthe plane of thegallWhelf Of course, the return of thering B'KQIisgradual,

parts but all bearing surfaces have rolling seats. The laminae furnish a firm bearing thorough y lubricated, even though the bearmay enter upon the sharpest curve used in practice and the shaft 2 Will respond thereto Without.subjecting an of the parts to any greaterstram than t ey are subjected to when the shafts 1 and 2 are strictly parallel.

It will be observed that in the gearing which We have devised there arene rubbing contact with the adjacent surfaces, thus reducing all friction to ay negligible point.

The casing has been described as dustproof, which is, of course, a practically 'necess sary protection under'the conditions of actual practice for such Vparts as are inclosed in the casin In order that the parts may be ings are largely of the anti-friction type, the casing may be made sufficiently tight to lholdl lubricating oil and the gearing may therefore run in oil.

It has been stated that there are interposed shims or laminas-between the nut-s 43 and their seats, which laminas are removable so that the nuts may be screwed up from time to time to take up Wear. It is, of course., possible to omit these lamina? but the n-ut-s might then be more or less loose in theirA against which the nuts may be screwed up tight and so all looseness be avoided.

In the foregoing description the shaft l with its )inion 'has been considered as the drive shaft, but the shaft 2 may be made the drive shaft and the shaft 1 become the driven' shaft, and the entire casing might have a movement in space with relation to the shaft 2. This, however, would constitute a mere reversal of the parts Without change of function or operation.

We claim y 1. In a transmission gear, an annular gear Wheel having an annular ball race on each face, apinion meshing With the gear Wheel,'a easing mclosing the gear Wheel and pinion and provided with an annular ball race corresponding to one ofthe ball races of the annular gear, a removable cover for the casing adj ustably connected thereto, and an annular series of balls seated in the ball races on each side of the gear Wheel and in the respective ball races on the inner faces of the casing and cover.

2. In a transmission gear, an annular gear Wheel, a pinion meshing therewith, removable annular ball race members seated in the opposite faces of the annular gear, a casing for the gearjand pinion, av removable annular ball race -member in the casing matching one of the ball race members on the gear, a removablv adjustable cover for the casing. a removable annular ball race member in the i cover matching the other ball race member in the gear. and a serie-s of balls seated in the ballraces in the race members.- A

3. In a transmission gearing, a. gear wheel composed of an annulus with gear teeth ci its periphery, radially inwardlyprojecting plugs at diarnetricalljT opposite points onthe gear annulus, said plugs terminating in conesg a ring interior to the gear annulus, ball cups at diametrically opposite points on the ring and entered by the cone ends of the plugs, balls in saidcups engaged bv said cones, a shaft central to the gear, a hub on said shaft plugs extending at diametricallv oppositelpoints from said hub and terminating ih j 'gear adjustable seats for the cups, balls in the cups engaging the cone ends of the lug,v a shaft central to the gear Wheel, a hu on said shaft, lplugs extending from said hub at diametrically opposite points and terminating in cone ends, ball cups in the ring entered by `the cone ends of the plugs, adjustable seats for the cups, and balls in said cups en-4 gaging the cone ends of the plugs'.

5. In a transmission gearing, a gear Wheel, inwardly-projecting plugs at diametrically `-opposite points on said gea-r Wheel, each plug `havmga taper sea-tin. the gear wheel and terminating at its-free end in cones, a shaft central to the gea v heel, a hub on t-he shaft, plugs having taper vseats in the hub at'diametrically opposite points on the vsame and formed With cones on their free ends, and a ring interposed between the gear Wheel and the hub and having ball cups entered by the plugs on the gear Wheel and hub respectivelv, said cups having adjustable seats. and balls interposed between the conical ends .of-the plugs and the balls of the cups.

(i. A transmission gearing com )rising a. drive shaft, a barrel pinion carried therebj.Y and provided with rotatable teeth, an annular gear Wheel engaging the said teeth, a rasinginclosing said gear and pinion. and provided with an adjustable cover. anti-friction bearings between the sidds of the casing and sides of the annular gear, a ring internal to said gear Wheel, trunnions on said gear wheel entering said ring, a driven shal't centralte the gear Wheel,l trunnions carried thereby'. and anti-friction seats for said trunnionsin the ring. y

7. A transmission gearing comprising driving shaft. a gear mounted thereon, an annular gear inmesh with the iirst named gear. a driven shaft. universal connections between the driven gear and driven shaft, a

sav

casing adjustably connected thereto, con- I as our own, We have hereto axed our -signatlnuous annular antl-frlctlon' ball -bearmgs tures 1n the presence of two Wltnesses.

between the sides ofthe annular gear and-the WILLIAM C. MAYO. Walls of the casing and cover for maintaining JOHN HOULEHAN. 5 the annular gear 1n alinement with the first- Witnesses: v named gear. MABEL O. FAH'NEsrocK,

In testimony that We claim the foregoing PQ G. STEARNS.

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